Announcement

**teezam** · 02-19-2016, 10:55 AM

Re: Dustom's Turbocharged Harley 1250

Originally posted by dustom_99 View Post

Data suggests I did 80kmph- 120kmph in 2.2 secs @6psi.
Also these injectors are 3.9gps which are enough for lot of 110bhp Hammer performance builds out there. I am running out of them at 4500rpm itself . although some of it is because of 12.5afr I am running under boost , but even if it was 13.5afr which most of Hammer performance builds do I will hardly touch 4800-4900rpm and run out of duty cycle.
So I guess it is doing around 110bhp @ 4500rpm.
Good part of a Turbo is that the torque won't taper off like an NA engine. Because this Turbo is capable of 20+psi , It will maintain 7-8psi at whatever rpm you can throw at him.
Roughly I can say 130-140bhp at the wheel @7000rpm is very reasonable and do able.
This motor came with 70nm of torque @4000rpm or something like that . i am already making in excess of 160nm pretty sure.

Sent from my XT1068 using xBhp Connect mobile app

Are there any super chargers available in the market instead of turbo chargers to give out a smooth acceleration across the band without the sudden surge

**dustom_99** · 02-19-2016, 11:40 AM

Re: Dustom's Turbocharged Harley 1250

Originally posted by teezam View Post

Are there any super chargers available in the market instead of turbo chargers to give out a smooth acceleration across the band without the sudden surge

Who told you Turbocharger gives you a sudden surge??
Anyway even if supercharger were available , what are you going to do with it . application will decide if they are available or not.

Sent from my XT1068 using xBhp Connect mobile app

**dustom_99** · 02-19-2016, 11:44 AM

Re: Living A dream!

Originally posted by OneWithNature View Post

Dustom,

This is brilliant ! Fitting after market parts is something....but building something on your own is an achievement at a different level.

You are an inspiration to DIY guys and motor heads here.

Do post a 0-100 video once all is ready !

Can't post 0-100 . drive belt will be shattered . But sure I can post 100-160 or 60-160 or something like that.
Just don't want to put down too much torque in 1 and 2 gears.

Sent from my XT1068 using xBhp Connect mobile app

**AashishS** · 02-19-2016, 01:09 PM

Re: Living A dream!

Originally posted by dustom_99 View Post

Can't post 0-100 . drive belt will be shattered . But sure I can post 100-160 or 60-160 or something like that.
Just don't want to put down too much torque in 1 and 2 gears.

Sent from my XT1068 using xBhp Connect mobile app

You have created a monster sir

Congrats!

But then how much reliable or say usable will this setup be if it can shatter the drive belt like that? You can look at strengthening the belt or maybe installing a drive shaft ?

**dustom_99** · 02-19-2016, 01:23 PM

Re: Living A dream!

Originally posted by AashishS View Post

You have created a monster sir

Congrats!

But then how much reliable or say usable will this setup be if it can shatter the drive belt like that? You can look at strengthening the belt or maybe installing a drive shaft ?

It is going to be at least as reliable as factory HD- remember everyone says they are not very reliable to begin with,lol.
Unlike car guys installing turbos in India with aftermarket ECU( haltec/Greddy) and piggy bank fooling devices etc which usually result in vehicle not really being useable in everyday life ( largely because conflicts between stock and aftermarket ECU/ components as desi tuners want to split some functions to aftermarket tuner and retain some functions with stock) , I have done it with stock ECU and no fooling device . just data change in stock map. As discussed previously , I will take example of Low manifold pressure on deceleration- most tuners would quietly suggest you some aftermarket contraption to feed air to manifold on deceleration , I reprogrammed the Idle control valve to not fully close under a deceleration event. That way once it is programmed correctly it will preform with OEM reliability.
So apart from initial tuning troubles of Fault codes etc , once the AFR table and ign Timing table are corrected. The ECU is gonna follow them like a religion . so no worries on that front!
Its Just that with almost twice the torque , one cant simply rev and dump the clutch from a dead stop.
Only precaution to take is not going all out from a stop. In roll on accelerations she will take it happily.
If I ever decide to participate in drag race events , I can always switch over to chain drive. Whole chain conversion is 600-700$.
Let us all see how she fairs in long run.
Sent from my XT1068 using xBhp Connect mobile app

**teezam** · 02-19-2016, 01:43 PM

Re: Dustom's Turbocharged Harley 1250

Originally posted by dustom_99 View Post

Who told you Turbocharger gives you a sudden surge??
Anyway even if supercharger were available , what are you going to do with it . application will decide if they are available or not.

Sent from my XT1068 using xBhp Connect mobile app

Hey dustom, am looking at the possibility of installing a supercharger kit sometime in the future. My preference is towards supercharges as they produce a much linear curve across the powerband.

Unlike Turbochargers, which are good for drag racing and a commonly found HD / Busa mod. The turbo charger kicks in at a higher rpm and produces a sudden boost while the supercharger in terms of power will be much less than what turbo producers kicks in with the word go across all rmp without any lag. Meaning for me much safer as minimal loss of traction and easier to manage.

**dustom_99** · 02-19-2016, 01:56 PM

Re: Dustom's Turbocharged Harley 1250

Originally posted by teezam View Post

Hey dustom, am looking at the possibility of installing a supercharger kit sometime in the future. My preference is towards supercharges as they produce a much linear curve across the powerband.

Unlike Turbochargers, which are good for drag racing and a commonly found HD / Busa mod. The turbo charger kicks in at a higher rpm and produces a sudden boost while the supercharger in terms of power will be much less than what turbo producers kicks in with the word go across all rmp without any lag. Meaning for me much safer as minimal loss of traction and easier to manage.

That is all Internet crap!
First of all - even a supercharger does not produce linear boost , you must study the compressor efficiency curve vs rpm to find the truth !
Secondly a supercharger does not produce boost all the way from idle rpm. Just because it is rotating via crank mere rotation itself does not mean it will provide boost.
Thirdly a supercharger uses very large part of power usually 50-60% just for it to function. Superchargers are very inefficient at energy conversion.

Fourth- a right sized Turbo will kick in at your desired rpm . for example VGT I am using can be set up to provide positive pressure from as low as 2500rpm or it can be set up to provide from as high as 5000rpm. You can also control VGT operation to keep boost linear , also you can control waste gate of Turbo to keep boost linear .
Soo many low cost cars use Turbos because it increases power as well as increase efficiency ( fuel efficiency + energy conversion efficiency)
If you select wrong Turbo for wrong application of course it will not be linear.

Sent from my XT1068 using xBhp Connect mobile app

**AashishS** · 02-19-2016, 05:52 PM

Re: Living A dream!

Originally posted by dustom_99 View Post

It is going to be at least as reliable as factory HD- remember everyone says they are not very reliable to begin with,lol.
Unlike car guys installing turbos in India with aftermarket ECU( haltec/Greddy) and piggy bank fooling devices etc which usually result in vehicle not really being useable in everyday life ( largely because conflicts between stock and aftermarket ECU/ components as desi tuners want to split some functions to aftermarket tuner and retain some functions with stock) , I have done it with stock ECU and no fooling device . just data change in stock map. As discussed previously , I will take example of Low manifold pressure on deceleration- most tuners would quietly suggest you some aftermarket contraption to feed air to manifold on deceleration , I reprogrammed the Idle control valve to not fully close under a deceleration event. That way once it is programmed correctly it will preform with OEM reliability.
So apart from initial tuning troubles of Fault codes etc , once the AFR table and ign Timing table are corrected. The ECU is gonna follow them like a religion . so no worries on that front!
Its Just that with almost twice the torque , one cant simply rev and dump the clutch from a dead stop.
Only precaution to take is not going all out from a stop. In roll on accelerations she will take it happily.
If I ever decide to participate in drag race events , I can always switch over to chain drive. Whole chain conversion is 600-700$.
Let us all see how she fairs in long run.
Sent from my XT1068 using xBhp Connect mobile app

By reliability i did not actually mean about the engine or the ecu mapping done by you. I meant how much stock components will be able to take it which in this case was the drive belt which can tear apart due to increased torque. Which made me think about its usability in real world scenarios. What if you mistakenly dump the clutch

Anyways i got your point from the above explanation and really glad to hear it.

I do not consider you like other tuners as i can see the level of hard work you put in and the transparency with which you talk about all the technical details, your project's hiccups and how you went on to correct them.

I hope you get the tuning sorted out quickly and treat us with a nice video very soon.

All the best!

**dustom_99** · 02-19-2016, 06:14 PM

Re: Living A dream!

Originally posted by AashishS View Post

By reliability i did not actually mean about the engine or the ecu mapping done by you. I meant how much stock components will be able to take it which in this case was the drive belt which can tear apart due to increased torque. Which made me think about its usability in real world scenarios. What if you mistakenly dump the clutch

Anyways i got your point from the above explanation and really glad to hear it.

I do not consider you like other tuners as i can see the level of hard work you put in and the transparency with which you talk about all the technical details, your project's hiccups and how you went on to correct them.

I hope you get the tuning sorted out quickly and treat us with a nice video very soon.

All the best!

Well Sportster are very well built and engineered motorcycles. They have been racing in drag racing circuits for over 25 years, they share their engines with buells. Engine itself is way over engineered because it shares pretty much all the components with bigger 1200 cc evolution engine. Exactly same engine is placed in Buell 1200 which produces over 100 bhp from factory itself. And then people go out and do all sort of performance mods on it. Stage 1 is pretty much done by everyone .
I already have forged pistons from world's best racing piston manufacturer Carrillo and also have energy one clutch upgrade. So my bike is pretty much all set for handling 120-130 bhp.
Well what happnes if I accidentally dump the clutch ??
It would have to be one hell of an accident for me to hold the throttle wide open , let all that boost build up and then accidentally dump the clutch as well.
Effects would be same as if I were to accidentally not apply my brakes on an unmanned railway crossing when I can see the train is passing through.
Mistakes will of course be punished..

Sent from my XT1068 using xBhp Connect mobile app

**AashishS** · 02-19-2016, 06:19 PM

Re: Living A dream!

Originally posted by dustom_99 View Post

Well Sportster are very well built and engineered motorcycles. They have been racing in drag racing circuits for over 25 years, they share their engines with buells. Engine itself is way over engineered because it shares pretty much all the components with bigger 1200 cc evolution engine. Exactly same engine is placed in Buell 1200 which produces over 100 bhp from factory itself. And then people go out and do all sort of performance mods on it. Stage 1 is pretty much done by everyone .
I already have forged pistons from world's best racing piston manufacturer Carrillo and also have energy one clutch upgrade. So my bike is pretty much all set for handling 120-130 bhp.
Well what happnes if I accidentally dump the clutch ??
It would have to be one hell of an accident for me to hold the throttle wide open , let all that boost build up and then accidentally dump the clutch as well.
Effects would be same as if I were to accidentally not apply my brakes on an unmanned railway crossing when I can see the train is passing through.
Mistakes will of course be punished..

Sent from my XT1068 using xBhp Connect mobile app

haha

That was just a silly thought which came to my mind.

Ride Safe

**rachitkdogra** · 02-19-2016, 09:16 PM

Re: Dustom's Turbocharged Harley 1250

Bravo!! Really like the fact that you went ahead with something that was not done before in India.
This kind of research really helps learning and brings an individual connection with the bike.

Have been a fan of your thread and thank you for all the updates.

CHEERS!!

Rachit

**dustom_99** · 02-22-2016, 06:58 PM

Re: Dustom's Turbocharged Harley 1250

There war a slight exhaust leak from front header . so set about rewelding the joint . I am sure it was robbing me of some spool up time.

Slowly but surely getting into show quality welds. This one came out much cleaner and consistent.

Can you see the beautifully curved front header! I love those curves!

Sent from my XT1068 using xBhp Connect mobile app

**dustom_99** · 02-25-2016, 06:16 PM

Re: Dustom's Turbocharged Harley 1250

Now what the fcuk is this ?? I opened up the exhaust headers for some welding and covering leaks. Assemble it back , did not touch any sensor or anything !
ECU reporting ATM pressure as 37 kpa! Wrist watch ( which I believe is right ) reporting 97kpa! Wht da fcuk is going on in here!

Sent from my XT1068 using xBhp Connect mobile app

**dustom_99** · 02-25-2016, 06:25 PM

Re: Dustom's Turbocharged Harley 1250

This thing not even starting now!

Sent from my XT1068 using xBhp Connect mobile app

**VIJAY ''BIKER'' CHAUHAN** · 02-25-2016, 06:43 PM

Re: Dustom's Turbocharged Harley 1250

Originally posted by dustom_99 View Post

This thing not even starting now!

Sent from my XT1068 using xBhp Connect mobile app

O man what happened

Sent from my Nexus 5 using xBhp Connect mobile app

Announcement

Dustom's Turbocharged Harley 1250

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment

Comment